CAS 1734-79-8 appears in our catalog under these names: 4-Nitrocinnamaldehyde, predominantly trans, 98% , 4-Nitrocinnamaldehyde, 3-(4-Nitrophenyl)acrylaldehyde 98%, 3-(4-Nitrophenyl),acrylaldehyde, 97%, 97%, 4-Nitrocinnamaldehyde, min. 95 %, 25 g. Offered by: Thermo Scientific (Alfa Aesar), Biosynth, Ambeed, Chemat, Roth. Available pack sizes: 5g, 25g, 50g, 100g, 250g, 500g, 250mg, 1g.